Michael Clarke Duncan, who received an Academy Award nomination as Best Supporting Actor for his role in 1999’s TheGreen Mile, has died, EW confirms. He was 54.

The actor, who most recently played Leo Nox on Fox’s Bones spin-off The Finder, suffered a heart attack in July that kept him in the intensive care unit for over a month.

The 6 -foot-4 Duncan made a name for himself by playing roles that called for someone of his massive size – like bodyguards and bouncers. His role in 1998’s Armageddon was among his first exposure to mainstream audiences, who quickly fell in love with Duncan’s charming demeanor. He went on to appear in The Green Mile as death row inmate/healer John Coffey, the role that earned him his Oscar nomination. He also appeared in The Whole Nine Yards, Sin City, Daredevil, and many television shows, including Chuck and The Finder.

A statement from his rep is below:

Michael Clarke Duncan passed away this morning in Los Angeles, said his fiancée, Reverend Omarosa Manigault. The Oscar-nominated actor suffered a myocardial infarction on July 13 and never fully recovered. Manigault is grateful for all of your prayers and asks for privacy at this time. Celebrations of his life, both private and public, will be announced at a later date.